Abstract Verbal suppletion for participant number has recently attracted theoretical attention (Bobaljik & Harley 2017; Toosarvandani 2016). I show that cross-linguistically, participant number is marked by suppletion and reduplication and is part of a broader phenomenon, verbal number. I argue that reduplication provides evidence that participant number suppletion is not directly triggered by the argument, and I propose a unified account of participant number where there is a verb-internal number node that reflects number and mediates an agreement relation between the argument and the root. The number node, which marks plural arguments and events, may be valued by the closest c-commanding DP, and will be realized as reduplication or will trigger root suppletion. This is supported cross-linguistically by languages which mark both participant and event number by reduplication and suppletion. I propose that this head allows a stricter locality condition on suppletion where the trigger is always a head in the morphological word (complex X⁰). My analysis bears on current issues of locality and suppletive domains since I argue that the topmost complex X⁰ node forms a morphological domain which contains smaller domains that are privileged in the syntax but restrictive in the morphophonology.

中文翻译：

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数量一致：言语复数补充和重复

摘要参与者人数的口头补充最近引起了理论上的关注（Bobaljik＆Harley 2017; Toosarvandani 2016）。我发现从语言上讲，参与者人数以补充和重复为标志，并且是更广泛的现象即口头人数的一部分。我认为，重复提供了证据，证明参与者人数补充不是由参数直接触发的，并且我提出了参与者人数的统一说明，其中存在一个动词-内部数字节点，该节点反映数字并介导参数与词根之间的协议关系。标记多个自变量和事件的数字节点可以由最接近的c指令DP进行赋值，并将其实现为重复或触发根求和。通过重复和补充标记参与者和事件编号的语言在语言上提供了跨语言支持。我建议该头部在补充时允许更严格的局部条件，其中触发器始终是形态词（复杂X⁰）中的头部。由于我认为最复杂的X⁰节点形成一个形态域，其中包含较小的域，这些较小的域在语法上是有特权的，而在形态学上是限制性的，因此，我的分析涉及当前的位置和补充域问题。